Add a simple unit test framework

.github/codeql/javascript-config.yml

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+name: "CodeQL config for Javascript"
+
+paths:
+  - frontend/src/**

.github/codeql/python-config.yml

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+name: "CodeQL config for Python"

.github/workflows/codeql-analysis.yml

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+name: "CodeQL"
+
+on:
+  push:
+    branches: [ main, 'b[0-9].[0-9]+' ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ main, 'b[0-9].[0-9]+' ]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'javascript', 'python' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://git.io/codeql-language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        config-file: ./.github/codeql/${{ matrix.language }}-config.yml
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    #- name: Autobuild
+    #  uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2

.github/workflows/test.yaml

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+name: Run Unit Test via Pytest
+
+on:
+    push:
+        branches: ["main"]
+        tags-ignore: ["**"]
+    pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9.20"]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install tox>=4.19
+      - name: Check for lint
+        run: |
+          tox -e format,isort,lint
+      - name: Run unit tests
+        run: |
+          tox -e python3.9.20
+      - name: Publish coverage data
+        uses: actions/upload-artifact@v4
+        with:
+            name: Coverage for ${{ github.event.head_commit.id }}
+            path: .tox/unit/tmp/coverage.db
+            if-no-files-found: warn
+            retention-days: 30